package cn.tedu.sp06;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

@EnableCircuitBreaker
@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}

	/**
	 * 创建 RestTemplate 实例
	 * 放入 spring 容器
	 * @return
	 */
	@Bean
	@LoadBalanced //对 RestTemplate 进行封装，添加负载均衡
	public RestTemplate restTemplate(){
		//设置调用超时时间，超时后认为调用失败
		SimpleClientHttpRequestFactory f=new SimpleClientHttpRequestFactory();
		f.setConnectTimeout(1000);//建立连接等待时间
		f.setReadTimeout(1000);//连接建立后，发送请求后，等待接收响应时间
		return new RestTemplate(f);
	}

}
